Question

Resolva as equações : a) 4x-6=22 b) 9 - x =2x c) 8 + 4x = 6 x -4 d) 3x+1=x+9 e) 4x - 11 = 7 - 2x f) 13x + 1 - 10x=5 + x (Quero na ordem) Pfv me passem preciso pra um trabalho !

Answer 1

 
 
 

a) 4x-6=22 ==. 4x = 22+6 ==> 4x = 28 ==> x = 7

b) 9 - x =2x ==> 2x+x = 9 ==> 3x=9 ==> x = 3

c) 8 + 4x = 6 x -4 ==> 6x-4x=8+4==> 2x = 12 ==> x = 6

d) 3x+1=x+9 ==> 3x-x = 9+1 ==> 2x = 10 ==> x = 5

e) 4x - 11 = 7 - 2x ==> 4x+2x = 7+11 ==> 6x = 18 ==> x = 3

f) 13x + 1 - 10x=5 + x ==> 13x-10x-x = 5-1 ==> 2x = 4 ==> x = 2